Let M be a compact, connected non-orientable surface without boundary and of genus g ¥ 3. We investigate the pure braid groups PnpMq of M, and in particular the possible splitting of the Fadell-Neuwirth short exact sequence 1 ÝÑ PmpMz tx1, . . . , xnuq ãÝÑ Pn mpMq p ÝÑ PnpMq ÝÑ 1, where m, n ¥ 1, and p is the homomorphism which corresponds geometrically to forgetting the last m strings. This pr...

The simple entanglement of N -body N -particle pure states is extended to the more general M -body or M -body N -particle states where N 6= M . Some new features of the M -body N -particle pure states are discussed. An application of the measure to quantify quantum correlations in a Bose-Einstien condensate model is demonstrated.

— In order to obtain exact values of the spectroscopic splitting factor in pure iron along the [100] and [111] crystallographic directions, measurements of ferromagnetic resonance in whisker type single crystals have been performed in the frequency range 12 470 GHz, at room temperature. The results show that the ̂ -factor is independent on frequency in the given range and yield the value g = 2.0...

in order to study the qualitative, quantitative characteristics of a pure common populus alba stand in polkalleh & a mixed stand of populus alba & populus nigra in karchegan, two 30-year-old stands were selected with a plantation interval ( spacing) of 2.5 × 1.5 m in each of which 30 pcs of 2 are samples were randomly selected. in each sample pc all the trees diameters were measured using a dia...